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Diabetes Mellitus: Overview and Type I Subtype

Diabetes Mellitus: Overview and Type I Subtype

Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...

Type I Diabetes II: Pathophysiology

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...

Type I Diabetes I: Introduction

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...

Type I Diabetes III: Clinical Manifestations

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...

Type II Diabetes II: Pathophysiology

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.

Diabetes Mellitus: Type 2 and Gestational

Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...

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Updated: Jul 2, 2026

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19

Published on: July 5, 2022

Cognitive function in children with type 1 diabetes: a meta-analysis.

Patricia A Gaudieri¹, Rusan Chen, Tammy F Greer

¹Department of Psychiatry, University of Rochester, Rochester, New York, USA. patricia_gaudieri@urmc.rochester.edu

|August 30, 2008

Summary

Children with type 1 diabetes show slightly lower cognitive scores overall. Early-onset diabetes (EOD) is linked to more significant impacts on learning, memory, and attention compared to late-onset diabetes (LOD).

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Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

Published on: October 23, 2020

Area of Science:

Pediatric Endocrinology
Neuropsychology
Metabolic Disorders

Background:

Type 1 diabetes (T1D) is a chronic condition affecting children worldwide.
Cognitive function in pediatric T1D is a growing area of research.
Previous studies suggest potential cognitive impacts, but a comprehensive meta-analysis is needed.

Purpose of the Study:

To quantify cognitive difficulties in pediatric T1D.
To examine the influence of early disease onset on cognition.
To assess the impact of severe hypoglycemia on cognitive function.

Main Methods:

Systematic literature search of pediatric cognitive studies since 1985.
Inclusion of studies from MEDLINE and PsycInfo databases.
Meta-analysis using effect sizes (Cohen's d) to compare T1D and control groups.

Main Results:

Overall cognition was slightly lower in children with T1D (ES -0.13).
Learning, memory, and attention were more affected in early-onset T1D (EOD) versus late-onset T1D (LOD).
EOD showed larger cognitive deficits, particularly in learning and memory (-0.49).

Conclusions:

Pediatric T1D is associated with mild cognitive score reductions across most domains.
Cognitive effects are more pronounced in EOD.
Seizures had minimal and inconsistent effects on cognition.